Genetic engineering will allow humans to direct their own evolution for the first time in history. By arranging the four bases of DNA - A, T, G, C - genetic instructions can be changed, altering organisms. CRISPR is a new, faster, cheaper, and more precise genetic engineering tool that can edit live cells and has reduced the cost of genetic engineering by 99%. If guided with caution, genetic engineering has the potential to cure diseases like HIV and cancer, extend human lifespans by borrowing genes from immortal species, and enhance humans for space travel by engineering plants and stronger bodies. However, there are also risks like the rise of "designer babies", dictators forcing genetic changes, and the creation of super soldiers